11 Replies Latest reply on Feb 27, 2015 7:31 PM by DaKn_263916

    LPF2

    feme_285141

       you can connect the LPF2 the psoc 1 to oscilocope?

        • 1. Re: LPF2
          DaKn_263916

          Yes you can input a signal to LPF and output it to a scope.

             

           

             

           

          • 2. Re: LPF2
            feme_285141

             And connect refMUx?

            • 3. Re: LPF2
              DaKn_263916

              Yes, like this for example -

                 

               

                 

               

              • 4. Re: LPF2
                feme_285141

                 who clock speed it is put to LPF2? for example if the cutoff frequency was 100 Hz

                • 5. Re: LPF2
                  DaKn_263916

                  Right click the component, use the wizard to design the

                     

                  optimal filter for your application.

                     

                   

                     

                  When you pick the corner frequency and the oversampling clock the column

                     

                  clock is reported lower left in wizard.

                     

                   

                     

                  Regards, Dana.

                     

                   

                     

                   

                  • 6. Re: LPF2
                    feme_285141

                     oscilloscope without floating reference, could not it ??

                    • 7. Re: LPF2
                      DaKn_263916

                      Not sure what you are asking.

                         

                       

                         

                      If you need to do a floating differential measurement with a oscilloscope

                         

                      use 2 channels, one channel inverted, mode to add, and you can look

                         

                      at a voltage that is not ground referenced. There are voltage limitations

                         

                      and common mode issues to consider and frequency response, look

                         

                      in scope manual for that information.

                         

                       

                         

                      www.youtube.com/watch

                         

                       

                         

                      Regards, Dana.

                      • 8. Re: LPF2
                        feme_285141

                         I   measure one sinusoidal signal with PGA and RefMux of reference by  putting the oscilloscope probe on pins the PGA  and the RefMux as reference ,  never measured  the signal 

                        • 9. Re: LPF2
                          DaKn_263916

                          Post your project and I will take a look at it.

                             

                           

                             

                              

                             

                                   

                             

                          “File”                                                           Designer

                             

                          “Archive Project”

                             

                           

                             

                          Some questions -

                             

                           

                             

                          1) What is signal amplitude, frequency, and DC offset you are feeding into

                             

                          PSOC ?

                             

                           

                             

                          2) What pins are you trying to do the oscilloscope measurements on ?

                             

                           

                             

                           

                             

                          Regards, Dana.

                          • 10. Re: LPF2

                            Can someone tell me how was the hardware connection for LPF2 to oscilloscope looks like?

                               

                            What pins should I connect from the board to oscilloscope?

                               

                            Thanks.

                            • 11. Re: LPF2
                              JoMe_264151

                              Since you are relatively free in using the internal connections of a PSoC1 we cannot tell you which physical pin you have to connect some signal or device to. Start at the begin of this thread as a help and design your LPF2, use your own connections and configure the pins as you require.

                                 

                              When you get stuck, create an archive (Designer->File->Archive Project) and attach the resulting file to your post.

                                 

                               

                                 

                              Bob